Dismounting device of oil sprayer

Abstract

The utility model discloses a dismounting device of a fuel injector, which comprises an adjustable wrench head clamped on the fuel injector, the wrench head is vertically and fixedly connected with a curved bar, the wrench head comprises a fixed block, a sliding block and an adjusting screw rod, and the adjusting screw rod adjusts the sliding block to slide left and right relative to the fixed block. A supporting block is arranged at the joint of the upper portions of the fixed block and the sliding block, and the bottom of the supporting block abuts against the engine cylinder cover. The dismounting device for the fuel injector is used for dismounting the fuel injector, is simple in structure, convenient to operate and high in fuel injector dismounting efficiency, does not damage precision parts in the fuel injector, and greatly improves the inspection and maintenance efficiency of an engine.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a disassembly device for a fuel injector. Background Art

[0002] With the development and progress of science and technology, the power and speed of engines are getting higher and higher, and the structure of engines is becoming more and more compact. The highly integrated engine structure reduces the size of the engine and improves the adaptability of the engine, but it also brings difficulties in engine disassembly and maintenance.

[0003] As one of the key components in the engine fuel system, the injector is a precision device with very high processing accuracy. The injector is usually installed in the injector hole between the valve rocker arms on the cylinder head, and its structure is very compact. When repairing or inspecting the engine, it is often necessary to disassemble the injector, check the situation in the cylinder through the injector hole on the cylinder head, or inspect the injector. Because the injector fits tightly with the mounting hole and the pressure difference between the inside and outside of the cylinder is large, the injector cannot be directly pulled out by hand when disassembling the injector. In addition, due to the limitation of the installation space of the injector, it is difficult to use conventional tools when disassembling the injector. In addition, due to the differences in the types and sizes of injectors from different manufacturers and different models, there are many types and sizes of tools for disassembling the injector, which are inconvenient to carry and use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a disassembly device for a fuel injector, which is used for disassembling the fuel injector and has a simple structure, convenient operation, high efficiency in disassembling the fuel injector, and will not damage the precision parts inside the fuel injector, thereby greatly improving the inspection and maintenance efficiency of the engine.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a disassembly device for the injector, including an adjustable wrench head clamped on the injector, the wrench head is vertically fixedly connected with a bent rod, the wrench head includes a fixed block, a sliding block and an adjusting screw, the adjusting screw adjusts the sliding block to slide left and right relative to the fixed block, a support block is provided at the upper connection of the fixed block and the sliding block, and the bottom of the support block abuts against the engine cylinder head.

[0006] A further improvement of the technical solution of the utility model is that: the fixed block includes a fixed jaw, a fixed block light hole is opened on the fixed jaw, a lower channel is arranged on one side of the fixed jaw, an inner slide is arranged on the lower channel, the sliding block includes a movable jaw arranged opposite to the fixed jaw, an upper channel is arranged on one side of the movable jaw, an outer slide is arranged on the upper channel, the upper channel and the lower channel are slidably connected by the inner slide and the outer slide, and a movable block threaded hole is opened on the movable jaw.

[0007] A further improvement of the technical solution of the utility model is that the adjusting screw comprises a flange nut and a screw, an inner retaining ring groove is provided on the inner side of the fixed jaw, the distance between the flange nut and the inner retaining ring groove is equal to the thickness of the fixed jaw, an outer retaining ring groove is provided on the end of the screw located on the outer side of the movable jaw, and retaining rings are clamped on both the inner retaining ring groove and the outer retaining ring groove.

[0008] A further improvement of the technical solution of the utility model is that a curved rod fixing hole is provided on the support block, the curved rod is integrally formed, the curved rod comprises a first vertical rod, a bent rod and a second vertical rod, the first vertical rod is fixedly plugged into the curved rod fixing hole, and a handle is fixedly provided at the end of the second vertical rod.

[0009] A further improvement of the technical solution of the utility model is that the angle between the second vertical rod and the first vertical rod is 30°.

[0010] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0011] The disassembly device for the fuel injector provided by the utility model has a simple structure, and the overall structural layout utilizes the lever principle, so that a large torque conversion can be achieved in a limited space, and the disassembly work of the fuel injector can be reliably completed. The operation is convenient, the disassembly efficiency of the fuel injector is high, and the precision parts inside the fuel injector will not be damaged, so the inspection and maintenance efficiency of the engine is greatly improved.

[0012] The utility model spanner is adjustable and suitable for disassembling various fuel injectors. It has strong versatility and can adapt to the disassembly work of fuel injectors of different manufacturers and different models. It is more convenient to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the disassembly device of the fuel injector of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the wrench head of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the fixed block of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the mobile block of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the screw of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the curved rod of the utility model;

[0019] Figure 7 The utility model is a schematic diagram of the disassembly device of the fuel injector.

[0020] Among them, 1. engine cylinder head, 2. injector, 11. handle, 12. crank rod, 13. wrench head, 121. first vertical rod, 122. bent rod, 123. second vertical rod, 131. fixed block, 132. sliding block, 133. adjusting screw, 134. retaining ring, 1311. fixed jaw, 1312. inner slide, 1313. support block, 1314. crank rod fixing hole, 1315. fixed block light hole, 1316. lower channel, 1321. mobile jaw, 1322. outer slide, 1323. mobile block threaded hole, 1324. upper channel, 1331. flange nut, 1332. inner retaining ring groove, 1333. screw, 1334. outer retaining ring groove. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the embodiments:

[0022] like Figure 1 As shown, a disassembly device for a fuel injector includes a wrench head 13 which is clamped on the fuel injector 2 and is adjustable. The wrench head 13 is vertically fixedly connected with a bent rod 12. The overall structural layout utilizes the lever principle to achieve a large torque conversion in a limited space, and the disassembly work of the fuel injector is reliably completed. The specific structure of the disassembly device for the fuel injector is as follows:

[0023] like Figure 2 As shown, the wrench head 13 includes a fixed block 131 , a sliding block 132 and an adjusting screw 133 . The adjusting screw 133 adjusts the sliding block 132 to slide left and right relative to the fixed block 131 .

[0024] The specific structure of the fixed block 131 is as follows: Figure 3 As shown, the fixing block 131 includes a fixing jaw 1311 , a fixing block light hole 1315 is opened on the fixing jaw 1311 , a lower channel 1316 is arranged on one side of the fixing jaw 1311 , and an inner slideway 1312 is arranged on the lower channel 1316 .

[0025] The specific structure of the sliding block 132 is as follows: Figure 4 As shown, the sliding block 132 includes a movable jaw 1321 arranged opposite to the fixed jaw 1311, an upper channel 1324 is arranged on one side of the movable jaw 1321, an outer slide 1322 is arranged on the upper channel 1324, the upper channel 1324 is slidingly connected with the lower channel 1316 through the inner slide 1312 and the outer slide 1322, and a movable block threaded hole 1323 is opened on the movable jaw 1321.

[0026] The specific structure of the adjusting screw 133 is as follows: Figure 5As shown, the adjusting screw 133 includes a flange nut 1331 and a screw 1333. The screw 1333 is provided with an inner retaining ring groove 1332 on the inner side of the fixed jaw 1311. The distance between the flange nut 1331 and the inner retaining ring groove 1332 is equal to the thickness of the fixed jaw 1311. The end of the screw 1333 located outside the movable jaw 1321 is provided with an outer retaining ring groove 1334. The retaining ring 134 is clamped on the inner retaining ring groove 1332 and the outer retaining ring groove 1334. A support block 1313 is provided at the upper connection of the fixed block 131 and the sliding block 132, and the bottom of the support block 1313 abuts against the engine cylinder head 1.

[0027] The wrench head 13 of the utility model has an adjustable opening size. By rotating the adjusting screw 133, the sliding block 132 can move left and right along the sliding pair formed by the inner slide 1312 and the outer slide 1322, so that different opening sizes are formed between the fixed jaw 1311 and the sliding jaw 1312, thereby adapting to injectors of different sizes. The adjusting screw 133 passes through the fixed block light hole 1315 and the moving block 1323 to fix the fixed block 131 and the sliding block 132 together. Through the flange nut 1331 on the adjusting screw 133 and the two retaining rings 134 installed in the inner retaining ring groove 1332 and the outer retaining ring groove 1334, the adjusting screw 133 cannot be loosened from the fixed block 131 and the moving block 132. The left and right sliding of the sliding block 132 is achieved through the threaded connection between the screw 1333 and the threaded hole 1323 of the moving block. The sliding pair formed by the inner slideway 1312 and the outer slideway 1322 can provide horizontal guidance for the moving block 132 and restrict the moving block 132 from being separated from the fixed block 131 in the vertical direction.

[0028] The support block 1313 is provided with a bent rod fixing hole 1314. The bent rod 12 is integrally formed. The bent rod 12 includes a first vertical rod 121, a bent rod 122 and a second vertical rod 123. The first vertical rod 121 is fixedly plugged into the bent rod fixing hole 1314 and can be fixed by welding, threaded connection and other methods. A handle 11 is fixedly provided at the end of the second vertical rod 123. The handle 11, the bent rod 12 and the wrench head 13 can be made of the same material, such as steel, cast iron, etc., or different materials can be used, for example, the handle 11 is made of rubber, and the bent rod 12 and the wrench head 13 are made of steel, etc.

[0029] The included angle between the second vertical rod 123 and the first vertical rod 121 is 30°, and it is easier to use within this angle range.

[0030] Directions:

[0031] like Figure 7As shown, the wrench head 13 is inserted into the cutout plane in the middle of the injector 2, and the adjusting screw 133 is rotated until the fixed block 131 and the sliding block 132 are clamped with the plane in the middle of the injector 2, and the position of the support block 1313 is adjusted, or a support is added under the support block 1313. The wrench support block 1313 is firmly supported on the cylinder head 3, so that the top plane inside the wrench head 13 fits with the top surface of the cutout in the middle of the injector. The wrench head 13 structure uses the top plane inside the fixed block 131 and the sliding block 132 and the plane in the middle of the injector 2 to form a force application point, and the support block 1313 forms a lever fulcrum. Figure 7 Move the crank lever 12 in the direction of the arrow shown, and use the lever principle to pull the injector 2 upward.

Claims

1. A disassembly device for a fuel injector, characterized in that: The invention comprises an adjustable spanner head (13) which is clamped on the fuel injector (2); the spanner head (13) is vertically fixedly connected to a crankshaft (12); the spanner head (13) comprises a fixed block (131), a sliding block (132) and an adjusting screw (133); the adjusting screw (133) adjusts the sliding block (132) to slide left and right relative to the fixed block (131); a supporting block (1313) is provided at the upper connection between the fixed block (131) and the sliding block (132); and the bottom of the supporting block (1313) abuts against the engine cylinder head (1).

2. The disassembly device of a fuel injector according to claim 1, characterized in that: The fixed block (131) comprises a fixed jaw (1311), a fixed block light hole (1315) is provided on the fixed jaw (1311), a lower channel (1316) is provided on one side of the fixed jaw (1311), an inner slideway (1312) is provided on the lower channel (1316), the sliding block (132) comprises a movable jaw (1321) arranged opposite to the fixed jaw (1311), an upper channel (1324) is provided on one side of the movable jaw (1321), an outer slideway (1322) is provided on the upper channel (1324), the upper channel (1324) is slidably connected to the lower channel (1316) via the inner slideway (1312) and the outer slideway (1322), and a movable block threaded hole (1323) is provided on the movable jaw (1321).

3. The disassembly device of a fuel injector according to claim 2, characterized in that: The adjusting screw (133) comprises a flange nut (1331) and a screw (1333); the screw (1333) is provided with an inner retaining ring groove (1332) on the inner side of the fixed jaw (1311); the distance between the flange nut (1331) and the inner retaining ring groove (1332) is equal to the thickness of the fixed jaw (1311); the end of the screw (1333) is provided with an outer retaining ring groove (1334) on the outer side of the movable jaw (1321); retaining rings (134) are clamped on both the inner retaining ring groove (1332) and the outer retaining ring groove (1334).

4. The disassembly device of a fuel injector according to claim 1, characterized in that: The support block (1313) is provided with a bent rod fixing hole (1314); the bent rod (12) is integrally formed; the bent rod (12) comprises a first vertical rod (121), a bent rod (122) and a second vertical rod (123); the first vertical rod (121) is fixedly plugged into the bent rod fixing hole (1314); and a handle (11) is fixedly provided at the end of the second vertical rod (123).

5. The disassembly device of the fuel injector according to claim 4, characterized in that: The included angle between the second vertical rod (123) and the first vertical rod (121) is 30°.

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